Abstract
2-Methoxy-4-propylphenol, when mixed with phenethyl propionate, 7:3 or 3:7, was as effective as similar mixtures containing eugenol as an attractant for Popillia japonica Newman when tested in the field. 2-Methoxy-4-propylphenol is the first chemical found that exhibited a synergistic effect equal to that shown by eugenol; it also showed considerable attraction to the beetles when exposed as the pure chemical.